#02418B
Closest named color: Cobalt (#1E488F). oklch(38.8% 0.136 257.1), rgb(2, 65, 139).
Aa
White text reads best on this color (9.85:1).
About this color
#02418B is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.136 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.029 away. White text reads best on it, at 9.85:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.13:1 |
| White text | 9.85:1 |
Values
| HEX | #02418B |
| RGB | rgb(2, 65, 139) |
| HSL | hsl(212, 97%, 28%) |
| OKLCH | oklch(38.8% 0.136 257.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #02418B | 9.85:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #02418B | 2.13:1 | Fails | Lc 11.8 | Not readable |
| #02418B text on white | 9.85:1 | AAA | Lc 92.2 | Preferred for body text |
| #02418B text on black | 2.13:1 | Fails | Lc -10.3 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C2DBFF
oklch(88.5% 0.057 257.5)
-
Step 300
300
#99C3FF
oklch(80.9% 0.097 257.3)
-
Step 400
400
#5EA1FF
oklch(70.7% 0.154 257.1)
-
Step 500
500
#2785FF
oklch(63% 0.201 257.2)
-
Step 600
600
#006EE4
oklch(55.7% 0.198 257)
-
Step 700
700
#005CC1
oklch(49.2% 0.175 257.1)
-
Step 800
800
#004BA0
oklch(42.8% 0.152 257.1)
-
Step 900
900 (this color)
#02418B
oklch(38.8% 0.136 257.1)
-
Step 950
950
#05254F
oklch(27% 0.086 257)
#02418B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #09498E | 0.024 |
| Deuteranopia (no green cones) | #003E8A | 0.009 |
| Tritanopia (no blue cones) | #00535F | 0.102 |
| Achromatopsia (no color) | #434343 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #02418B
#02418B
oklch(38.8% 0.136 257.1)
- #5C3E00
#5C3E00
oklch(38.8% 0.081 77.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #02418B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.029
- Twilight Blue #0A437A ΔE 0.030
- Light Navy #155084 ΔE 0.049
- Sapphire #2138AB ΔE 0.060
- Deep Sea Blue #015482 ΔE 0.060
- Marine Blue #01386A ΔE 0.060
- Dusk Blue #26538D ΔE 0.060
- Blueberry #464196 ΔE 0.071
Use #02418B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.